auto save

my_tree.py

 import turtle
 import turtle
 
 
+def tree(n):
+    if n>=50:
+        pen.forward(n)
+        pen.right(30)
+        tree(n-10)
+        pen.left(60)
+        tree(n-10)
+        pen.right(30)
+        pen.up()
+        pen.backward(n)
+        pen.down
+
 pen = turtle.Turtle()
 pen = turtle.Turtle()
 pen.color('sienna')
 pen.color('sienna')
 # 画布大小
 # 画布大小
@@ -13,17 +25,7 @@ pen.backward(150)    # 后退
 pen.down()
 pen.down()
 
 
 
 
-def tree(n):
-    if n >= 50:
-        pen.forward(n)
-        pen.right(30)
-        tree(n-50)
-        pen.left(60)
-        tree(n-50)
-        pen.right(30)
-        pen.up()
-        pen.backward(n)
-        pen.down()
+
 
 
 
 
 tree(100)
 tree(100)